Synthesis and characterization of two-photon active chromophores based on asymmetrically substituted tetrathienoacene scaffolds

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题名:	Synthesis and characterization of two-photon active chromophores based on asymmetrically substituted tetrathienoacene scaffolds
作者:	林子超;Priyanka, Pragya;Vegiraju, Sureshraju;Lin, Jhe-Yi;Ni, Jen-Shyang;Huang, Hsun-Ying;Dwi Agustin, Rachmawati;Yau, Shueh Lin;Lin, Tzu-Chau;Chen, Ming-Chou
贡献者:	理學院化學學系
关键词:	Alkylcyanoacetate;Chromophores;Non-linear optics;Tetrathienoacene;Two-photon absorption
日期:	2016-10-01
上传时间:	2026-04-21 14:50:26 (UTC+8)
出版者:	Elsevier BV;Elsevier Ltd
摘要:	摘要： Four new asymmetric donor-π-acceptor (D-π-A) fused-thiophene based chromophores were developed and characterized for a two-photon absorption study. In the chromophores the alkylated tetrathienoacene served as a π spacer, p-methoxytriphenylamine was used as an electron donor, and a cyanoalkyl acetate unit was employed as the acceptor. To investigate the effect of elongated conjugation on this system, thiophene units were systematically incorporated between the central core and each capped ends. The thermal, optical, and electrochemical properties of these compounds were investigated. The photo-physical, electrochemical and electronic properties of these molecules were compared, and all four chromophores exhibit strong fluorescence and high thermal stability. The elucidated structure-property correlations are in agreement with the theoretical calculations based on the density functional theory. The compound containing a thiophene unit between the donor and spacer exhibits a maximal two-photon absorption cross-section value of 1130 GM. •D-π-A type chromophores using the tetrathioacene unit have been synthesized for 2PA.•The optoelectronic, chemical and physical properties were systematically studied.•The 2PA cross section values can be enhanced by the insertion of an additional thiophene unit into the appropriate position. 出版者： Elsevier Ltd 出版日期： 2016-10-01 出處： Dyes and pigments, 2016-10, Vol.133, p.65-72 版權： 2016 Elsevier Ltd 識別號： ISSN: 0143-7208 識別號： EISSN: 1873-3743 識別號： DOI: 10.1016/j.dyepig.2016.05.038
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